//    Definition for Node.
export class Node {
    val: number;
    next: Node | null;
    random: Node | null;
    constructor(val?: number, next?: Node, random?: Node) {
        this.val = val === undefined ? 0 : val;
        this.next = next === undefined ? null : next;
        this.random = random === undefined ? null : random;
    }
}
